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<div class="title">ExecutablePath.cpp</div>  </div>
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<a href="ExecutablePath_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ExecutablePath_8hpp.html">chi/Support/ExecutablePath.hpp</a>&quot;</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &lt;boost/filesystem/operations.hpp&gt;</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="keyword">namespace </span>fs = boost::filesystem;</div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// linux implementation</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#ifdef __linux__</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;dirent.h&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;fcntl.h&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;limits.h&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;sys/mman.h&gt;</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;sys/param.h&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;sys/stat.h&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#define NAMLEN(dirent) strlen((dirent)-&gt;d_name)</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacechi.html">chi</a> {</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;fs::path <a class="code" href="namespacechi.html#a895c4e199040694ef0c5984afa80af79">executablePath</a>() {</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <span class="keywordtype">char</span>     exe_path[MAXPATHLEN];</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    fs::path aPath(<span class="stringliteral">&quot;/proc/self/exe&quot;</span>);</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keywordflow">if</span> (fs::exists(aPath)) {</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        <span class="comment">// /proc is not always mounted under Linux (chroot for example).</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;        ssize_t len = readlink(aPath.string().c_str(), exe_path, <span class="keyword">sizeof</span>(exe_path));</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        <span class="keywordflow">if</span> (len &gt;= 0) <span class="keywordflow">return</span> std::string(exe_path, len);</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    }</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    assert(<span class="keyword">false</span>);  <span class="comment">// aah noo</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keywordflow">return</span> {};</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;}</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;}  <span class="comment">// namespace chi</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">// osx</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#elif defined __APPLE__</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &lt;mach-o/dyld.h&gt;</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &lt;sys/attr.h&gt;</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacechi.html">chi</a> {</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;fs::path <a class="code" href="namespacechi.html#a895c4e199040694ef0c5984afa80af79">executablePath</a>() {</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="comment">// On OS X the executable path is saved to the stack by dyld. Reading it</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="comment">// from there is much faster than calling dladdr, especially for large</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    <span class="comment">// binaries with symbols.</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="keywordtype">char</span>     exe_path[MAXPATHLEN];</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    uint32_t size = <span class="keyword">sizeof</span>(exe_path);</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordflow">if</span> (_NSGetExecutablePath(exe_path, &amp;size) == 0) {</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        <span class="keywordtype">char</span> link_path[MAXPATHLEN];</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        <span class="keywordflow">if</span> (realpath(exe_path, link_path)) <span class="keywordflow">return</span> link_path;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    }</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    assert(<span class="keyword">false</span>);</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keywordflow">return</span> {};</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;}</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;}  <span class="comment">// namespace chi</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#elif defined WIN32</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#define WIN32_MEAN_AND_LEAN</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#include &lt;Windows.h&gt;</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacechi.html">chi</a> {</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;boost::filesystem::path <a class="code" href="namespacechi.html#a895c4e199040694ef0c5984afa80af79">executablePath</a>() {</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    std::vector&lt;wchar_t&gt; PathName(MAX_PATH);</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    DWORD                Size = ::GetModuleFileNameW(NULL, PathName.data(), PathName.size());</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <span class="comment">// A zero return value indicates a failure other than insufficient space.</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keywordflow">if</span> (Size == 0) <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="comment">// Insufficient space is determined by a return value equal to the size of</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="comment">// the buffer passed in.</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">if</span> (Size == PathName.size()) <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="comment">// On success, GetModuleFileNameW returns the number of characters written to</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="comment">// the buffer not including the NULL terminator.</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    PathName.resize(Size);</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="comment">// Convert the result from UTF-16 to UTF-8.</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    std::string PathNameUTF8(MAX_PATH);</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="keywordflow">if</span> (UTF16ToUTF8(PathName.data(), PathName.size(), PathNameUTF8)) <span class="keywordflow">return</span> <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="keywordflow">return</span> std::string(PathNameUTF8.c_str()());</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;}</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor">#error GetMainExecutable is not implemented on this host yet.</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="namespacechi_html_a895c4e199040694ef0c5984afa80af79"><div class="ttname"><a href="namespacechi.html#a895c4e199040694ef0c5984afa80af79">chi::executablePath</a></div><div class="ttdeci">boost::filesystem::path executablePath()</div><div class="ttdoc">Get the path of the executable. </div></div>
<div class="ttc" id="namespacechi_html"><div class="ttname"><a href="namespacechi.html">chi</a></div><div class="ttdoc">The namespace where chigraph lives. </div><div class="ttdef"><b>Definition:</b> <a href="BitcodeParser_8hpp_source.html#l00012">BitcodeParser.hpp:12</a></div></div>
<div class="ttc" id="ExecutablePath_8hpp_html"><div class="ttname"><a href="ExecutablePath_8hpp.html">ExecutablePath.hpp</a></div></div>
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